spillway

水はけ口,余水路

spillway の類語

aqueduct, sluice, spill, wasteweir, tube, culvert, canal, duct, bed, race, water gate, waterway, flume, irrigation ditch, water channel, river bed, dry bed, stream bed, water gap, creek bed, water carrier, conduit, gully, gulch, flue, waterworks, watercourse, waterspout, millrace, wadi, swash, nullah, water furrow, tailrace, swash channel, arroyo, runnel, donga, riverway, headrace

spillway の言い換えを探すには

spillway（水はけ口）の類語・言い換え（パラフレーズ）を、日本語訳つきで関連度順に並べています。英作文の語彙を増やしたいとき、長文読解で本文と選択肢の言い換えを見抜きたいときに使えます。